Warning: Use of undefined constant YII_DEBUG - assumed 'YII_DEBUG' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\aroflo-dataforce\config\web.php on line 40

Fatal error: Uncaught Error: Class 'yii\web\Response' not found in C:\xampp\htdocs\aroflo-dataforce\config\web.php:155 Stack trace: #0 {main} thrown in C:\xampp\htdocs\aroflo-dataforce\config\web.php on line 155